4-Hydroxybenzaldehyde → HCID 136041227, compound

HRID 1106103Notes

Reaction equation

HRID 1106103 reaction equation
[C:1]([C:4]1[CH:9]=[CH:8][C:7]([N:10]2[C:14](=[O:15])[CH2:13][C:12]([C:16]([O:18][CH2:19][CH3:20])=[O:17])=[N:11]2)=[CH:6][CH:5]=1)([OH:3])=[O:2].[OH:21][C:22]1[CH:29]=[CH:28][C:25]([CH:26]=O)=[CH:24][CH:23]=1>C(O)(=O)C>[C:1]([C:4]1[CH:5]=[CH:6][C:7]([N:10]2[C:14](=[O:15])[C:13](=[CH:26][C:25]3[CH:28]=[CH:29][C:22]([OH:21])=[CH:23][CH:24]=3)[C:12]([C:16]([O:18][CH2:19][CH3:20])=[O:17])=[N:11]2)=[CH:8][CH:9]=1)([OH:3])=[O:2]

Participants

4

Reactant 2

HCID 1264-HydroxybenzaldehydeHCID 158343531H-Pyrazole-3-carboxylic acid, 1-(4-carboxyphenyl)-4,5-dihydro-5-oxo-, 3-ethyl ester

Product 1

HCID 136041227HCID 136041227, compound

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

276 g (1 mole) of 1-(p-carboxyphenyl)-3-ethoxycarbonyl-2-pyrazolin-5-one and 122 g (1 mole) of p-hydroxybenzaldehyde were dissolved in 1000 ml of acetic acid. The reaction mixture was refluxed for 3 h. The dye crystallized partially. After cooling to room temperature the dye was filtered with suction and rinsed with acetone.

Workup

  1. temperatureThe reaction mixture was refluxed for 3 h
  2. customThe dye crystallized partially
  3. filtrationwas filtered with suction
  4. washrinsed with acetone

Sources & evidence

ORD record
ord-9ede7fd711174c7e925de05439f93317
Source dataset
uspto-grants-1982_01
Patent number
US04311787

Reaction notes

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